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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0523690 (1995-09-05) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 4 인용 특허 : 0 |
The present invention is a ball valve that prevents scale formation on the exterior surface of the ball element, and therefore extends the life and efficiency of the ball valve. The ball valve comprises a ball element, a housing, and a jacket. The ball element has three ports formed therein and is s
A ball valve for controlling fluid flow, said ball valve having an open position that allows the fluid to flow through said ball valve and a closed position that prevents fluid from flowing through said ball valve, said ball valve comprising: a housing having an inside surface, and an upstream chann
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